Culvert.



L. Wd NELSEN.

CULVEHT. APBLICATION FILED JULY 10, 1916.

Patented Jan. 22, 1918.

www@

fag@

.34B i 'pmztio'n A' f concrete through which rein LAUBITS W. NELSEN,Oli` PONTIAC, ILLINOIS.

convenir.

Specication of Letters Patent. Patented Jan', 1918,

Application med July 1o, wie. serial nu. 108,275.

To all whom it may; concern: Be it known that l. LAURrrs W. Nnnsnn,i'citizen of the United Sintes, residing at IPontiac, in the county ofLivingston und 5` State of Illinois, have invented a certain new anduseful improvement in Culverts, 'of which the following is aspecification.

My invention lrelaties to :in improved culvert construction in which culvert sections of arch form may be iliade in quent'ty in the factory endshipped to the place where theculvert is to he umide, et which placethey 4maybe essei'nliled to torni the (zonipleted culvert. The culvertsections nre referehly of U-shepe, although they muy lieve otherconformetions. lfind thesesections are provided with reinforcing rods ofiron or steel, some of which are secured in the "z'erids of the culvertsections 'when they are Zofmenufe'ctured. so that the portions of the'tween the ends thus secured extend ie ends of the culvert sections tohe g hv the concrete o the hed of the 'lien the latter is constructed.The ing here thus secured in the culvert s hold the ends thereoftogether to stron hen, the sections after they ere inadeand uringshipment of the seme. The ses i tions are preferably made from concrete.30 My invention is shown in its preferred embodiment in theeccompenyirig drawings,

in Which- Fiure 1 shows one of the culvert sections 'in Si e elevation,Fig. Q-shows .the culvert section-in end elevation,

Figi: 3 shows portions of 'two of the culvert s c a sections 1n place inthe completed culvert in side elevation, and

const ction shown in Fig. 3. Sim er .letters refer to similar partsthrou 'hout the several views.

As hewn in Fi .i and 2,' each culvert section is preiereb y providedwith elbody f rcing rods a of iron or steel extend .to :strengthen thesection. These rods are prefyerebly continuous, although they may' bemade in an desired mennen und form and l.given any esired arrangement.It is Vpref'- erable to V.employ also a. second set of reinforcing rodsinsidel of the 'rods-o, shown at ierred to, other reinforcin rods o areprovided which have bent en extremely simple opera-tion Figj shows inend elevation the culvert b. In addition to the reiforcingrods resecuredin the.

ends of the culvert'section, so that-the mid portions of the barst'eXte-Iidheyon'd and outside of the ends of the' culvert sr'ctionundserve to connect the end portions of' tiie sec tion together tostrengthen the s'zilmefslo that after the sections are manufactured as'do scribed, they cannot readily be broken dun. ing handling or shipping.v l,

l-Vhen it is'desired to construct. a culvert from sections of the kindshown in Figs. l und 2, a. continuous hed of concrete B, as shown inFigs. 3 nudil, is first made which prf-.terribly is provided withlongitudinal reinforcing rods d, end before the hed of concrete sets thesections A are put in place by Aforcing the extending portions of thereini Jorcin rods c into the still lastic upper sur, face o the hed andembe ding the end di the sections in the upper surface of .tlie"hed Bwith the side edges of the 4sections es close together es they rcan bebrought. The concrete of the bed, of course, closes over the reinforcingrods c and When the bed is set, the result is e. strong reinforcedconcrete construction.' The joints between the sides of the sections mayhe filled, if desired, with thin cement-.so es to completely close them.

As e result of my construction, I am able to Ine-lie the culvertsections A in the factory in quantity, so that the\seetions may readilybe hed and shipped to any location Where it is desired -to construct eculvert. Further more, the construction of the culvert is en since itrequires only the laying of the concrete bed B of the culvert and noforms whatever are required .to ,comple-te the culvert construction,since 'the sections arereadily put in place in the culvert sectionswhich may be manufactured in advenee, resdy for use 'in any quantity andlocality. l l

W'hile )Chaire shown, lmy invention in the particular embodiment abovedescribed, I do not, however, limit myself to this exact construction,as Iinay lemploy any equivalent thereof knovvn' to the art at the time;of

- the liling of this application without-departin from the scope of theappended claims.

at I claim is:

1. As an article of'manufacture, a culvert sectionvcomprising concreteformed into a.

.U--shao""heving substantially parallel side but have also provided enim-- ion Walls and open on one side adjacent the ends of said sides, arelnforcing rod or rods havring their ends-bent at substantially rightangles to the middle portion thereof andV having a portion ofsaid bentends embedded y vin the concrete of the section, whereby said rod orrods extend across said open side at a distance from said ends, and areinforcing rod or rods extending through, the concrete of the sectionsubstantially parallel to the edges 0f the section.

2. As an article of manufacture, a culvert section comprising concreteformed into a a distance from said ends.

The method of forming f'- enrert, con sist'ing in forming a envcretel Jlat the place where the Vculvert is ti, or enlistructed`y and placingupon the had previously completed (mit arch sections having Iprfnjeetii'ig retain ers, said retainers being embedded in the concreteof the loed While the concrete el? the hed is still in plastic conditionand before it has l 4. The method of forming a culvert, consisting informing a concrete bed at the place where the vculvert is to beconstructed, and

placing upon .the bed before the latter has' set unit arch sectionshaving project-ing tie rods bet-Ween their lower ends so that the tierods are en'ihedded in the concrete of the hed when the unit archsections are placed in position.

4 In Witness whereof, hereunto subscribe niy nanie this 26th day ofJune, A. D. 1916n LAUarrs W NELSEN.

